Publications in Scientific Journals:
M. Holzweber, A. Lippitz, R. Hesse, R. Denecke, W.S.M. Werner, W. Unger:
"The use of ionic liquids for the determination of the spectrometer transmission function in X-ray photoelectron spectroscopy (XPS)";
Journal of Electron Spectroscopy and Related Phenomena,
The uncertainty of measurement in quantitative XPS analysis can be reduced by using a calibrated spectrometer
transmission function T(E), which is usually determined by taking spectra from Au, Ag, Cu and Ge elemental
reference materials. However, this approach is quite time-consuming due to required sample preparation steps
like sputter cleaning etc., and the relatively big number of samples to be measured. This contribution proposes
the use of the ionic liquids [C2C1im][NTf2] and [C3C1im][NTf2] as reference materials for a determination of
T(E). These multi-elemental samples deliver five intensive photoemission peaks, F 1s, O 1s, N 1s, C 1s and S 2p,
in an energy window from 160 eV to 700 eV which is of specific interest for applications of quantitative XPS for
surface chemical analysis of soft matter, one of the major applications of XPS.
Quantitative XPS Transmission function Reference materials Ionic liquids Spectrometer calibration UNIFIT SESSA
Created from the Publication Database of the Vienna University of Technology.